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公开(公告)号：US11831863B2
公开(公告)日：2023-11-28
申请号：US18092030
申请日：2022-12-30
发明人： Christen V. Nielsen , Dan Nelson
IPC分类号： H04N17/04 , H04N21/439 , H04H60/32
CPC分类号： H04N17/04 , H04H60/32 , H04N21/4394
摘要： Display device ON/OFF detection methods and apparatus are disclosed. Example display activity detectors disclosed herein are to extract regions from respective ones of captured video frames, the regions corresponding to a depiction of a display of a monitored media device Disclosed example display activity detectors are also to compute a distance metric that is to represent an amount a first one of the regions of a first one of the captured video frames differs from a corresponding second one of the regions of a second one of the captured video frames. Disclosed example display activity detectors are further to compare the distance metric to a threshold to determine whether the monitored media device is ON or OFF.
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公开(公告)号：US20230089158A1
公开(公告)日：2023-03-23
申请号：US17955453
申请日：2022-09-28
发明人： James Petro , Dan Nelson , Deborah Cross , Raghuram Ranganathan
摘要： Methods, apparatus, systems and articles of manufacture are disclosed selectively generating and storing hashed reference signatures. An example method disclosed herein determining whether watermark coverage of a first media segment satisfies a dropout constraint, the first media segment corresponding to a first monitoring time interval of a media source feed and, when the watermark coverage of the first media segment does not satisfy the dropout constraint hashing first media signatures associated with the first media segment to generate corresponding first hashed signatures and generating first reference data for the first media segment, the first reference data including the first hashed signatures and the first media signatures. The example method further includes, when the watermark coverage of the first media segment satisfies the dropout constraint, generating second reference data for the first media segment, the second reference data including the first media signatures.
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公开(公告)号：US20210160568A1
公开(公告)日：2021-05-27
申请号：US17114117
申请日：2020-12-07
发明人： James Petro , Dan Nelson , Deborah Cross , Raghuram RANGANATHAN
IPC分类号： H04N21/442 , H04N21/466 , H04N21/8358
摘要： Methods, apparatus, systems and articles of manufacture are disclosed to optimize reference signature matching using watermark matching. An example disclosed herein includes selecting first unhashed reference signatures to evaluate for a second time segment of monitoring data based on watermark coverage of a first time segment of the monitoring data, the monitoring data obtained from a meter monitoring media presented by a media device and comparing the first unhashed reference signatures with first unhashed monitored signatures from the second time segment of the monitoring data. The example further includes, when a first media event associated with the monitoring data is not identifiable based on the comparing of the first of unhashed reference signatures with the first unhashed monitored signatures hashing the first unhashed monitored signatures to form a corresponding first hashed monitored signatures and comparing the first hashed monitored signatures with a library of reference hashed signatures to determine the first media event associated with the second time segment of the monitoring data.
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4.发明申请公开(公告)号：US20200213666A1
公开(公告)日：2020-07-02
申请号：US16232512
申请日：2018-12-26
发明人： James Petro , Dan Nelson , Deborah Cross , Raghuram RANGANATHAN
IPC分类号： H04N21/442 , H04N21/8358 , H04N21/466
摘要： Methods, apparatus, systems and articles of manufacture are disclosed to optimize reference signature matching using watermark matching. An example disclosed herein includes selecting first unhashed reference signatures to evaluate for a second time segment of monitoring data based on watermark coverage of a first time segment of the monitoring data, the monitoring data obtained from a meter monitoring media presented by a media device and comparing the first unhashed reference signatures with first unhashed monitored signatures from the second time segment of the monitoring data. The example further includes, when a first media event associated with the monitoring data is not identifiable based on the comparing of the first of unhashed reference signatures with the first unhashed monitored signatures hashing the first unhashed monitored signatures to form a corresponding first hashed monitored signatures and comparing the first hashed monitored signatures with a library of reference hashed signatures to determine the first media event associated with the second time segment of the monitoring data.
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公开(公告)号：US10110889B2
公开(公告)日：2018-10-23
申请号：US15958814
申请日：2018-04-20
发明人： Christen V. Nielsen , Dan Nelson
IPC分类号： H04N17/04 , H04N21/439 , H04H60/32
摘要： Display device ON/OFF detection methods and apparatus are disclosed. Example metering apparatus disclosed herein include first means for sensing an audio signal output from a media device. Disclosed example metering apparatus also include second means for performing audio code detection to detect audio codes in the audio signal, and third means for determining an audio gain level applied to the audio signal. Disclosed example metering apparatus further include fourth means for determining whether the media device is ON or OFF based on the audio gain level applied to the audio signal and whether a valid audio code is detected in the audio signal.
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公开(公告)号：US09961342B2
公开(公告)日：2018-05-01
申请号：US15207019
申请日：2016-07-11
发明人： Christen V. Nielsen , Dan Nelson
IPC分类号： H04N17/04 , H04H60/33 , H04N21/439 , H04H60/32
CPC分类号： H04N17/04 , H04H60/32 , H04N21/4394
摘要： Display device ON/OFF detection methods and apparatus are disclosed. Example methods disclosed herein include measuring, with a first sensor, a first temperature value associated with the media device. Example methods disclosed herein also include measuring, with a second sensor, a second temperature value corresponding to an ambient temperature in an environment including the media device. Example methods disclosed herein further include comparing the first temperature value to the second temperature value to make a first determination indicating whether the media device is ON or OFF.
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公开(公告)号：US20220069931A1
公开(公告)日：2022-03-03
申请号：US17368462
申请日：2021-07-06
IPC分类号： H04H60/58 , H04N21/442 , H04H60/37 , H04N21/44 , H04H60/59
摘要： Methods, apparatus, systems and articles of manufacture to reduce false positive signature matches due to similar media segments in different reference media assets are disclosed. Example apparatus disclosed herein include a signature matcher to compare monitored media signatures with a library of reference media signatures, the monitored media signatures associated with monitored media, the library of reference media signatures including sequences of reference signatures associated with respective reference media assets. Disclosed example apparatus also include a match information identifier to identify a number of different matched reference media assets associated with ones of the sequences of reference media signatures that match a sequence of matched monitored media signatures. Disclosed example apparatus further include a false positive identifier to, in response to the number of different matched reference media assets satisfying a threshold number, eliminate one or more of the matched reference media assets from being credited to the monitored media.
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公开(公告)号：US20210258566A1
公开(公告)日：2021-08-19
申请号：US17164483
申请日：2021-02-01
发明人： Christen V. Nielsen , Dan Nelson
IPC分类号： H04N17/04 , H04H60/32 , H04N21/439
摘要： Display device ON/OFF detection methods and apparatus are disclosed. Example display activity detectors disclosed herein are to extract regions from respective ones of captured video frames, the regions corresponding to a depiction of a display of a monitored media device Disclosed example display activity detectors are also to compute a distance metric that is to represent an amount a first one of the regions of a first one of the captured video frames differs from a corresponding second one of the regions of a second one of the captured video frames. Disclosed example display activity detectors are further to compare the distance metric to a threshold to determine whether the monitored media device is ON or OFF.
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公开(公告)号：US20210152862A1
公开(公告)日：2021-05-20
申请号：US17101828
申请日：2020-11-23
发明人： David Howell Wright , Arun Ramaswamy , Dan Nelson , Glen Vilches
IPC分类号： H04N21/24 , G06Q30/02 , H04H60/31 , H04H60/45 , H04H60/52 , H04N21/414 , H04N21/439 , H04N21/442 , H04N21/258
摘要： An example apparatus disclosed herein includes means for collecting demographic data of a user, including a phone number for a mobile device, via a website associated with an information gathering entity, the demographic data collected via the website from a personal computer, separate from the mobile device, used to access the website. The disclosed example apparatus also includes means for sending a message to the mobile device, the sent message, when responded to, resulting in downloading of a metering software module to the mobile device. The disclosed example apparatus further includes means for receiving, from the mobile device and at a system associated with the information gathering entity, information indicative of events associated with use of the mobile device, and means for associating the received information with the demographic data.
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公开(公告)号：US10863236B2
公开(公告)日：2020-12-08
申请号：US16232512
申请日：2018-12-26
发明人： James Petro , Dan Nelson , Deborah Cross , Raghuram Ranganathan
IPC分类号： H04N21/442 , H04N21/466 , H04N21/8358
摘要： Methods, apparatus, systems and articles of manufacture are disclosed to optimize reference signature matching using watermark matching. An example disclosed herein includes selecting first unhashed reference signatures to evaluate for a second time segment of monitoring data based on watermark coverage of a first time segment of the monitoring data, the monitoring data obtained from a meter monitoring media presented by a media device and comparing the first unhashed reference signatures with first unhashed monitored signatures from the second time segment of the monitoring data. The example further includes, when a first media event associated with the monitoring data is not identifiable based on the comparing of the first of unhashed reference signatures with the first unhashed monitored signatures hashing the first unhashed monitored signatures to form a corresponding first hashed monitored signatures and comparing the first hashed monitored signatures with a library of reference hashed signatures to determine the first media event associated with the second time segment of the monitoring data.
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